@Suhas07 If u dont mind me answering, assuming u are General + Male (Suhas is ur actual name, is'nt it?)-->
ABKIS- Definitely out of the window mathematically.
C- at a score of 339 which is approx 99.89%ile.
L- at approx 99.6 to be safe (as u wont be getting much marks in class-12 or grad section. U have not mentioned if u have work-ex but I am assuming u dont. Plus u are NOT a girl/non-engg, so they would deduct 5 marks out of the total 50 straightaway. So u need a high CAT score to offset these negatives)
new IIMs--> at 98+ to be safe (normally for ppl with decent acads, its 97+ but u should keep it higher)
But plz dont feel bad as there as several B-Schools that dont care much about ur past. Among the top ones, there is FMS, MDI, NITIE, SJMSOM, IIT-Delhi, IIFT where if u have a high CAT score, u are basically assured of a seat even if ur performance in PI is bad (by bad, I OBVIOUSLY dont mean that u can argue/fight with the panel :P), as these institutes have a massive weightage on the CAT score which basically cements ur place [U will find that 99% of the guys with say 99.6 has converted EACH of these institutes SAFELY).
Then there is the great one XLRI which again does'nt care about ur past but just lays great focus on ur XAT score + PI (Yes, PI is very important here as u will find several 99.5+ scorers who were rejected by XL last year on account of poor PI).
For back-up options, u have XIMB, IMT-G FT, NMIMS, SIBM-P which again have a massive weightage on ur score & u will find that most high scorers convert easily.
So as u can see, there are several options open for u & u dont need to lose ur heart, rueing over past mistakes. But yes obviously, ur score will make or break ur case. So focus a lot on getting a great score as believe me, it is very very tough to get 99+. If ur score sucks, then NOTHING can save u, not even if u have 90+ throughout & if it's good, NOTHING can stop u from getting into a Top-10 school easily 😃 Best of Luck.